scholarly journals SYNTHESIS OF NEW WATER SOLUBLE METAL BINDING POLYMERS: COMBINATORIAL CHEMISTRY APPROACH

1999 ◽  
Author(s):  
B F SMITH
Keyword(s):  
Combinatorial Chemistry ◽  
Metal Binding ◽  
Water Soluble

scholarly journals Synthesis of New Water-Soluble Metal-Binding Polymers: Combinatorial Chemistry Approach

1999 ◽  
Author(s):  
Barbara F Smith ◽  
R Bryan Miller ◽  
Mark J Kurth ◽  
Samuel Sawan
Keyword(s):  
Combinatorial Chemistry ◽  
Metal Binding ◽  
Water Soluble

Metal Binding by Water-Soluble Polychelates and Implications for Agriculture

2011 ◽  
Vol 64 (12) ◽  
pp. 1593 ◽  
Author(s):  
Garry W. Warrender ◽  
Robert G. Gilbert
Keyword(s):  
Metal Ions ◽  
Atomic Absorption ◽  
Emulsion Polymerization ◽  
Atomic Absorption Spectroscopy ◽  
Metal Binding ◽  
Metal Ion ◽  
Agricultural Soils ◽  
Water Soluble ◽  
Aminosalicylic Acid ◽  
Chemical Binding

Means are developed to improve the metal ion delivery/remediation potential of polyacrylamides (PAMs), by incorporation of the co-monomer N-acryloyl-4-aminosalicylic acid. The polymers were synthesized by solution and inverse emulsion polymerization. The chemical binding of two soil micronutrients, Cu2+ and Fe3+, were investigated using atomic absorption spectroscopy. The modified PAM had an enhanced affinity for metal ions compared with conventional PAMs. This modified PAM has the potential as a delivery tool of plant micronutrients and stabilizers for agricultural soils undergoing intense irrigation. The same polymers may also provide a detoxifying effect in these applications where some micronutrient sources may be in excess and detrimental to productive agriculture.

scholarly journals Preconcentration of low levels of americium and plutonium from waste waters by synthetic water-soluble metal-binding polymers with ultrafiltration

1998 ◽  
Vol 234 (1-2) ◽  
pp. 225-229 ◽  
Author(s):  
B. F. Smith ◽  
R. R. Gibson ◽  
G. D. Jarvinen ◽  
T. W. Robison ◽  
N. C. Schroeder ◽  
...  
Keyword(s):  
Metal Binding ◽  
Water Soluble ◽  
Waste Waters ◽  
Low Levels ◽  
Synthetic Water

scholarly journals Galvanic Wastewater Treatment by Means of Anionic Polymer Enhanced Ultrafiltration

2012 ◽  
Vol 19 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Irena Korus
Keyword(s):  
Wastewater Treatment ◽  
Metal Binding ◽  
Metal Ion ◽  
Water Soluble ◽  
Partial Recovery ◽  
Solution Ph ◽  
Anionic Polymer ◽  
Metal Retention ◽  
Metal Separation ◽  
Polymer Metal

Galvanic Wastewater Treatment by Means of Anionic Polymer Enhanced Ultrafiltration This work is focused on polyelectrolyte enhanced ultrafiltration as an effective heavy metal separation technique. Three types of effluents, containing Zn(II), Cu(II) and Ni(II) ions, were subjected to the separation process. Poly(sodium 4-styrenesulfonate) - PSSS, a water soluble anionic polyelectrolyte was used as a metal binding agent. Two Sepa® CF (Osmonics) membranes: EW, made of polysulfone and a modified polyacrylonitrile membrane MW, were used in the ultrafiltration process. The preliminary UF tests were carried out on model solutions with target metal ion concentrations of 10, 100 and 250 mg dm-3. The main parameters affecting the metal retention (the polyelectrolyte quantity and solution pH) were examined. The values of pH 6 and polymer : metal concentration ratio CPSSS : CM = 7.5 : 1 (mol of mer unit per mol of metal) were selected to perform the galvanic wastewater ultrafiltration-concentration tests. Three types of wastewater containing Zn(II), Ni(II) and Cu(II) ions within the concentration range of 30÷70 mg dm-3 were used in the investigations. Very high metal retention coefficients, up to > 99%, were achieved. The retentates obtained were subjected to the decomplexation-ultrafiltration (pH = 1) and subsequent diafiltration step, which enabled partial recovery of concentrated metal ions and the polyelectrolyte. The recovered polyelectrolyte was reused toward Ni(II) ions and the high effectiveness of metal separation has been achieved.

Water-soluble benzo- and naphtho-thiadiazole-based bistriazoles and their metal-binding properties

2010 ◽  
Vol 46 (9) ◽  
pp. 1419 ◽  
Author(s):  
Scott M. Brombosz ◽  
Anthony Lucas Appleton ◽  
Andrew J. Zappas II ◽  
Uwe H. F. Bunz
Keyword(s):  
Metal Binding ◽  
Water Soluble ◽  
Binding Properties

scholarly journals Measurement of Cadmium Ion in the Presence of Metal-Binding Biopolymers in Aqueous Sample

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Jian Pu ◽  
Kensuke Fukushi
Keyword(s):  
Metal Binding ◽  
Analytical Techniques ◽  
Water Soluble ◽  
Ion Selective Electrode ◽  
Aqueous Sample ◽  
Aqueous Environment ◽  
Cadmium Complex ◽  
Selective Electrode ◽  
Cadmium Ion ◽  
Polymer Complexes

In aqueous environment, water-soluble polymers are effectively used to separate free metal ions from metal-polymer complexes. The feasibilities of four different analytical techniques, cadmium ion-selective electrode, dialysis sack, chelate disk cartridge, and ultrafiltration, in distinguishing biopolymer-bound and nonbound cadmium in aqueous samples were investigated. And two different biopolymers were used, including bovine serum albumin (BSA) and biopolymer solution extracted from cultivated activated sludge (ASBP). The ISE method requires relatively large amount of sample and contaminates sample during the pretreatment. After the long reaction time of dialysis, the equilibrium of cadmium in the dialysis sack would be shifted. Due to the sample nature, chelate disk cartridge could not filter within recommended time, which makes it unavailable for biopolymer use. Ultrafiltration method would not experience the difficulties mentioned above. Ultrafiltration method measuring both weakly and strongly bound cadmium was included in nominally biopolymer-cadmium complex. It had significant correlation with the Ion-selective electrode (ISE) method (R2=0.989for BSA, 0.985 for ASBP).

Sign in / Sign up

Export Citation Format

Share Document